kth.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rate-dependent effects on the mechanical behaviour of paper
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics, Solid Mechanics.
2023 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Hastighetsberoende effekter på mekaniska egenskaper hos papper (Swedish)
Abstract [en]

It is established that paper properties depend on the loading rate. The rule of thumb is that the in-plane strength and stiffness increases about 10\%, when the strain rate increases by a factor of 10. Converting of paperboard into packages requires creasing of the paperboard followed by folding to make 3 dimensional packages. Crease response is controlled by in-plane properties, which contribute to the loading and the spring back of the crease which gives the paperboard its final geometry. 

This work aims to characterize the rate and time dependent properties of paper, done by tensile testing at high strain rates of up-to 100 000 mm/min using an electro-mechanical testing machine. Also investigated in this work are the rate dependence and characterization of the plies for a deeper understanding of the contributing factors to this rate dependence. At the end of this work the aim is to retrieve the rate dependent behavior of the materials and compare them with the existing rule of thumb.

In this work it was concluded that the rule of thumb is accurate for the ultimate strength of the material in the strain rate range of 10^4 to 10^1 strains/second. It was also observed that stiffness of the material increases, but at a rate lower than the stated rule of thumb.

Abstract [sv]

Det är fastställt att pappersegenskaperna beror på belastningshastigheten. Tumregeln är att hållfastheten och styvheten i-planet styrkan och styvheten ökar med ökar med ca 10\%, när töjningshastigheten ökar med en faktor 10. Omvandling av kartong till förpackningar kräver att kartongen bigas och viks för att veckas följt av vikning för att göra 3-dimensionella förpackningar. Vikresponsen styrs av egenskaper i planet, som bidrar till belastningen och bigens återfjädring som ger kartongen dess slutliga geometri. 

Detta arbete syftar till att karakterisera de hastighets- och tidsberoende egenskaperna hos papper, genom dragprovning vid höga töjningshastigheter på upp till 100000 mm/min med en elektromekanisk provningsmaskin. I detta arbete undersöks även hastighetsberoendet och karaktäriseringen av skikten för en djupare förståelse av de bidragande faktorerna till detta hastighetsberoende. I slutet av detta arbete är målet att få fram materialens hastighetsberoende beteende och jämföra dem med befintliga tumregler.

Slutsatsen från detta arbete var att även att höga hastigheter så håller tumregeln att styrkan ökar 10\% när belastningshastigheten ökar en faktor 10.

Place, publisher, year, edition, pages
2023. , p. 68
Series
TRITA-SCI-GRU ; 2023:271
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-337377OAI: oai:DiVA.org:kth-337377DiVA, id: diva2:1801622
External cooperation
Tetra Pak
Subject / course
Solid Mechanics
Educational program
Master of Science - Engineering Mechanics
Supervisors
Examiners
Available from: 2023-10-02 Created: 2023-10-02 Last updated: 2023-10-02Bibliographically approved

Open Access in DiVA

fulltext(6251 kB)149 downloads
File information
File name FULLTEXT01.pdfFile size 6251 kBChecksum SHA-512
660e63489017b03feefc922aafc4c1563656dd735833705706a44fd0dadfc027fcdd9f4479d21d460636de89aad57215c0c78a42c06877e9ed4ef3b99304072c
Type fulltextMimetype application/pdf

By organisation
Solid Mechanics
Applied Mechanics

Search outside of DiVA

GoogleGoogle Scholar
Total: 149 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 320 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf